Alaska earthquakes

M4.0 earthquake 63 km SE of Adak, Alaska

A magnitude 4.0 earthquake struck 63 km SE of Adak, Alaska on Mon, Apr 29, 2019, 1:42 PM HADT (22:42 UTC), 28 km (17 mi) below the surface.

A larger quake followed: M4.4 41 km NE of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-04-29 22:42:31 UTC
Depth
27.6 km (17.2 mi), shallow
Epicenter
51.473° N, 175.980° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
4.0mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.116 · 20 stations
3.5ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 6.0 km horizontally, 11.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
213°, poorly surrounded by stations
Stations used
46

Nearby

Within 100 km, magnitude 1.5 and up: 123 in the 60 days after this one and 41 in the 30 days before it.

After

  1. 2.464 km SSE of Adak, Alaska · 2712 days ago · 22 km deep · 17 km away
  2. 2.369 km ESE of Adak, Alaska · 2712 days ago · 51 km deep · 36 km away
  3. 2.253 km SE of Adak, Alaska · 2711 days ago · 57 km deep · 12 km away
  4. 1.969 km SSW of Adak, Alaska · 2711 days ago · 27 km deep · 69 km away
  5. 1.545 km ENE of Adak, Alaska · 2710 days ago · 11 km deep · 67 km away
  6. 1.754 km SSE of Adak, Alaska · 2710 days ago · 24 km deep · 24 km away
  7. 1.560 km SW of Adak, Alaska · 2710 days ago · 21 km deep · 95 km away
  8. 1.742 km SSE of Adak, Alaska · 2710 days ago · 31 km deep · 29 km away
  9. 2.075 km ENE of Adak, Alaska · 2710 days ago · 104 km deep · 86 km away
  10. 1.634 km SSE of Adak, Alaska · 2710 days ago · 43 km deep · 33 km away
  11. 1.879 km WSW of Atka, Alaska · 2710 days ago · 114 km deep · 76 km away
  12. 1.958 km SSW of Adak, Alaska · 2709 days ago · 47 km deep · 77 km away
  13. 1.642 km SSW of Adak, Alaska · 2709 days ago · 46 km deep · 58 km away
  14. 1.959 km SE of Adak, Alaska · 2708 days ago · 23 km deep · 9 km away
  15. 2.375 km ESE of Adak, Alaska · 2707 days ago · 53 km deep · 40 km away
  16. 2.277 km E of Adak, Alaska · 2707 days ago · 68 km deep · 51 km away
  17. 1.926 km SE of Adak, Alaska · 2707 days ago · 47 km deep · 37 km away
  18. 1.845 km SW of Adak, Alaska · 2707 days ago · 46 km deep · 78 km away
  19. 2.143 km SSE of Adak, Alaska · 2706 days ago · 44 km deep · 35 km away
  20. 2.194 km SW of Atka, Alaska · 2706 days ago · 12 km deep · 59 km away
  21. 1.738 km WSW of Adak, Alaska · 2706 days ago · 63 km deep · 88 km away
  22. 3.466 km SSE of Adak, Alaska · 2704 days ago · 29 km deep · 16 km away
  23. 1.951 km SSE of Adak, Alaska · 2704 days ago · 42 km deep · 24 km away
  24. 2.148 km SE of Adak, Alaska · 2704 days ago · 25 km deep · 16 km away
  25. 2.663 km SE of Adak, Alaska · 2702 days ago · 33 km deep · 11 km away
  26. 2.248 km E of Adak, Alaska · 2702 days ago · 73 km deep · 38 km away
  27. 4.1101 km SW of Atka, Alaska · 2702 days ago · 35 km deep · 53 km away
  28. 3.894 km SW of Atka, Alaska · 2702 days ago · 35 km deep · 53 km away
  29. 2.8100 km SW of Atka, Alaska · 2702 days ago · 35 km deep · 51 km away
  30. 1.855 km SSE of Adak, Alaska · 2701 days ago · 22 km deep · 19 km away
  31. 1.554 km SW of Adak, Alaska · 2701 days ago · 10 km deep · 88 km away
  32. 1.884 km SW of Atka, Alaska · 2700 days ago · 26 km deep · 64 km away
  33. 2.086 km SW of Atka, Alaska · 2699 days ago · 35 km deep · 67 km away
  34. 1.679 km SSE of Adak, Alaska · 2699 days ago · 19 km deep · 42 km away
  35. 4.441 km NE of Adak, Alaska · 2698 days ago · 141 km deep · 76 km away
  36. 3.899 km SW of Atka, Alaska · 2697 days ago · 21 km deep · 58 km away
  37. 2.388 km SSE of Adak, Alaska · 2696 days ago · 14 km deep · 43 km away
  38. 1.847 km SSW of Adak, Alaska · 2696 days ago · 45 km deep · 64 km away
  39. 3.689 km SE of Adak, Alaska · 2695 days ago · 35 km deep · 26 km away
  40. 2.196 km SE of Adak, Alaska · 2695 days ago · 5 km deep · 36 km away
  41. 2.581 km SSE of Adak, Alaska · 2695 days ago · 22 km deep · 23 km away
  42. 2.5116 km SE of Adak, Alaska · 2695 days ago · 13 km deep · 55 km away
  43. 1.7110 km SSE of Adak, Alaska · 2695 days ago · 11 km deep · 51 km away
  44. 2.379 km SE of Adak, Alaska · 2694 days ago · 0 km deep · 19 km away
  45. 2.833 km NE of Adak, Alaska · 2693 days ago · 95 km deep · 70 km away
  46. 1.957 km SE of Adak, Alaska · 2692 days ago · 18 km deep · 13 km away
  47. 2.435 km WSW of Adak, Alaska · 2692 days ago · 77 km deep · 89 km away
  48. 2.044 km E of Adak, Alaska · 2691 days ago · 78 km deep · 43 km away
  49. 1.841 km SW of Adak, Alaska · 2691 days ago · 50 km deep · 79 km away
  50. 2.363 km SE of Adak, Alaska · 2690 days ago · 28 km deep · 8 km away
  51. 3.894 km SSW of Atka, Alaska · 2690 days ago · 10 km deep · 85 km away
  52. 2.685 km S of Adak, Alaska · 2689 days ago · 24 km deep · 55 km away
  53. 3.994 km S of Adak, Alaska · 2689 days ago · 35 km deep · 60 km away
  54. 2.684 km S of Adak, Alaska · 2689 days ago · 20 km deep · 58 km away
  55. 2.054 km SE of Adak, Alaska · 2688 days ago · 50 km deep · 9 km away
  56. 2.029 km SE of Adak, Alaska · 2688 days ago · 43 km deep · 34 km away
  57. 2.189 km S of Adak, Alaska · 2688 days ago · 21 km deep · 56 km away
  58. 2.8110 km SSW of Adak, Alaska · 2687 days ago · 31 km deep · 100 km away
  59. 2.023 km SSE of Adak, Alaska · 2685 days ago · 46 km deep · 42 km away
  60. 2.538 km SSW of Adak, Alaska · 2683 days ago · 33 km deep · 59 km away

The first 60 of 123.

Before

  1. 1.936 km W of Adak, Alaska · 2715 days ago · 69 km deep · 91 km away
  2. 2.980 km ENE of Adak, Alaska · 2716 days ago · 168 km deep · 92 km away
  3. 1.923 km SSE of Adak, Alaska · 2716 days ago · 51 km deep · 42 km away
  4. 2.632 km SSE of Adak, Alaska · 2717 days ago · 48 km deep · 32 km away
  5. 2.9120 km SE of Adak, Alaska · 2717 days ago · 26 km deep · 58 km away
  6. 2.140 km SSW of Adak, Alaska · 2718 days ago · 47 km deep · 60 km away
  7. 1.689 km E of Adak, Alaska · 2718 days ago · 51 km deep · 52 km away
  8. 2.467 km SW of Atka, Alaska · 2718 days ago · 25 km deep · 83 km away
  9. 1.845 km SSW of Adak, Alaska · 2718 days ago · 50 km deep · 61 km away
  10. 1.651 km SW of Adak, Alaska · 2719 days ago · 44 km deep · 80 km away
  11. 2.457 km SSE of Adak, Alaska · 2720 days ago · 31 km deep · 28 km away
  12. 2.3Andreanof Islands, Aleutian Islands, Alaska · 2720 days ago · 23 km deep · 66 km away
  13. 3.4123 km SE of Adak, Alaska · 2720 days ago · 10 km deep · 60 km away
  14. 2.438 km SSW of Adak, Alaska · 2720 days ago · 48 km deep · 61 km away
  15. 2.940 km SSE of Adak, Alaska · 2721 days ago · 45 km deep · 28 km away
  16. 2.255 km SSE of Adak, Alaska · 2721 days ago · 16 km deep · 18 km away
  17. 2.028 km ESE of Adak, Alaska · 2721 days ago · 85 km deep · 37 km away
  18. 2.161 km SSW of Adak, Alaska · 2722 days ago · 52 km deep · 77 km away
  19. 1.815 km SE of Adak, Alaska · 2722 days ago · 58 km deep · 48 km away
  20. 2.27 km N of Adak, Alaska · 2722 days ago · 144 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70003fxd (also filed as ak0195h6awjj). Read Fri, Oct 2, 2026, 3:18 AM UTC.